Trader consensus on Polymarket assigns an 83.5% implied probability to a 21°C high temperature in Shanghai today, driven by the latest China Meteorological Administration (CMA) forecast ensembles and international models like ECMWF and GFS, which converge on peak daytime readings around 21°C amid mild southerly winds and partial cloud breaks allowing solar heating. This morning's satellite observations confirmed reduced overnight cloud cover compared to yesterday's broader 18–22°C projections, tightening the range while Shanghai's urban heat island effect—boosting station measurements by 1–2°C—further supports the outcome. Historical March averages hover near 15°C, but this warm spell aligns with early spring patterns; scattered showers pose minor risk of capping at 20°C (0.1% odds), with hourly updates from Pudong and Xujiahui stations expected through afternoon.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Shanghai on March 30?
Highest temperature in Shanghai on March 30?
21°C 74%
22°C 19.9%
23°C or higher 5.4%
16°C <1%
$186,071 Vol.
$186,071 Vol.
16°C
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
74%
22°C
20%
23°C or higher
5%
21°C 74%
22°C 19.9%
23°C or higher 5.4%
16°C <1%
$186,071 Vol.
$186,071 Vol.
16°C
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
74%
22°C
20%
23°C or higher
5%
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Shanghai Pudong International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Mar 29, 2026, 2:16 PM ET
Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...Outcome proposed: No
Dispute window
Final
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Shanghai Pudong International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...Outcome proposed: No
Dispute window
Final
Trader consensus on Polymarket assigns an 83.5% implied probability to a 21°C high temperature in Shanghai today, driven by the latest China Meteorological Administration (CMA) forecast ensembles and international models like ECMWF and GFS, which converge on peak daytime readings around 21°C amid mild southerly winds and partial cloud breaks allowing solar heating. This morning's satellite observations confirmed reduced overnight cloud cover compared to yesterday's broader 18–22°C projections, tightening the range while Shanghai's urban heat island effect—boosting station measurements by 1–2°C—further supports the outcome. Historical March averages hover near 15°C, but this warm spell aligns with early spring patterns; scattered showers pose minor risk of capping at 20°C (0.1% odds), with hourly updates from Pudong and Xujiahui stations expected through afternoon.
Experimental AI-generated summary referencing Polymarket data · Updated
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